Is the file in your add and remove list in control panel? If so delete it there.
Is the file in your "Start" "All programs" list?
What happens when you double click it?
Have you tried to right click it and scroll to delete and delete it that way?
Have you run any virus, malware or spyware programs to try and get rid of it?
If not try:-On-line Virus Scan
Go to one or all of these sites and do an online virus scan.
Im sure you're tried to delete it manually. if that failed to work than you might want to try this unlocker tool http://ccollomb.free.fr/unlocker/#download
its a simple tool thats allows you to right click the file that doesn't wanna delete and choose delete. If the deletion of the file is unsuccessful than you can choose a "force delete" on that file.
I don't think he's tried to delete it, just asking if it's safe to delete first.
It's probably some kind of back-up file from the program you used to do the restoration, so google the file name and the name of the software you used. This should tell you what it is and if it's safe to remove.